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0220U102240,
0116U006486
,
Theoretical investigations of the problems of plasma microwave electronics, nonequilibrium plasma chemistry and new principles of acceleration for producing and applying charged particle beams in inertial fusion and high-energy physics.
Onishchenko Ivan M, Доктор фізико-математичних наук
11-03-2020
National Science Center "Kharkiv Institute of Physics and Technology"
The process of radiation by charged particles moving in potentials, which are changed periodically both in space and in time, has been researched. The quantum-mechanical approach has shown the possibility of efficient excitation of high-frequency oscillations (up to the ultraviolet and X-ray) by nonrelativistic particles. Plasma lens for ion beam focusing has been numerically simulated by 2.5D code LCODE. It has shown that semi-bounded ion-beam is focused along its entire length. The degree of focusing of the sequence of driver bunches into a 5-zone rectangular dielectric resonator, filled with a plasma of density 1010 cm-3, was determined using 3D code. The possibility of exciting a Cherenkov wakefield in an ionic dielectrics by short laser pulses has been researched theoretically for the first time. Dynamics of an ion beam into the injector of a linear induction accelerator has been investigated using the code “Carat”, depending on the external magnetic field, electron and ion beam densities and the presence of an accelerating field. It has been established that the acceleration of the ion beam occurs not only due to the applied electric field, but also due to the space-charge field of the electron beam, which arises as a result of its deceleration.
Buts Viacheslav О
Karas Vyacheslav G
Maslov Vasyl I
Ognivenko Vladimir V
Onishchenko Ivan M
Sotnikov Gennadij V
2020-04-02
Updated: 2025-12-05
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